fieldset-display-ruby.html

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This WPT test may be referenced by the following Test IDs:
- /html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/fieldset-display-ruby.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>fieldset and CSS display (ruby)</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<style>

 #inline-ref { display: inline-block; }

</style>

<fieldset id="block-ref">x</fieldset>

<fieldset id="inline-ref">x</fieldset>

<fieldset id="test">x</fieldset>

<script>

  const blockWidth = getComputedStyle(document.querySelector('#block-ref')).width;

  const inlineWidth = getComputedStyle(document.querySelector('#inline-ref')).width;

  const testElm = document.querySelector('#test');

  // Please only add canonical values to these lists:

  // (Also, note that we're not testing "display:run-in" here; it's mentioned

  // in several CSS specs, but no browser engines appear likely to support it.)

  const blocks = ['block ruby'];

  const inlines = ['ruby', 'ruby-base', 'ruby-text', 'ruby-base-container', 'ruby-text-container'];

  function test_display(val, expectedWidth) {

    test(() => {

      testElm.style.removeProperty('display');

      testElm.style.display = val;

      const computed = getComputedStyle(testElm);

      assert_equals(computed.display, val, `display: ${val} is not supported`);

      assert_equals(computed.width, expectedWidth);

    }, `fieldset with display: ${val}`);

  for (const val of blocks) {

    test_display(val, blockWidth);

  for (const val of inlines) {

    test_display(val, inlineWidth);

</script>